Stopping apparatus



(No Model.)

P. SIMONSON. STOPPING APPARATUS.

Patented Mar. 17, 1891.

UNITED STATES PATENT Ormea,

FLAVEL SIMONSON, OF BA'lESVILLE, ARKANSAS, ASSIGNOR TO GEORGE l-I. CHAMBERLAIN, OF MILWAUKEE, IVISOONSIN.

STO PPI NG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 448,589, dated March 17, 1891.

l Application iiled November 12, 1889. Serial No. 330,036. (No model.)

.To all whom t may concern:

Be it known that I, FLAvEL StMoNsoN, a citizen of the United States of America, re-

siding at Batesville, in the county of Indef' pendence and State of Arkansas, have invented certain new and useful Improvements in Stopping Apparatuses, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to an automatic stopping apparatus for use on skids to arrest the forward movement of rolling bodies or to allow them to pass, at the will of the operator-for instance, as in loading barrels or logs into vessels or, as in the present case, when applied to logs in a saw-mill; and it consists in the construction and combination of parts, hereinafter fully described in connection with the accompanying drawings, and pointed out in the claims.

Figure l of the drawings is a .perspective view of my invention, showing the parts in position to stop the log or other body. Fig. 2 is a longitudinal sectional View showing the partsin position to permita log or other body t0 roll down the skids.

In the drawings, A represents the door of the mill7 onrwhich are arranged in the usual man ner the two skids B. To each of the skids on its inner side is attached a metal plate C, and between this plate and a short standard l) is pivoted, as at l, the stop E, which is made preferably of malleable metal and in the form shown--that is to say, the bar from which it is formed is bent so that the portion in front of the pivot will curve upward and rearward, this portion, which normally extends some distance above the top of the skids, being in this case sharpened, and the rear end of the bar is bent so as to incline toward and rest normally on the floor. The stop has a wave or ogee e in its under side near its pivotal point for a purpose presently explained.

F represents the stop-lock, which consists of a lever f, provided at its rear end with an acute-angled arm f and at its front end with an obtuse-angled arm f2, said lever being pivoted between the plate O and the standard D by a pivot-bolt 2, passing through its rear end at the junction therewith of the arm f When the apparatus is at rest, the upper end of this acute-angled arm f abuts -under and against the convex portion of the ogee or wave e in the under side of the stop E, so that said arm then stands forward of the pivotal point of the stop and directly in the line of pressure on the stop, whereby the latter is tirmly held against rocking on its pivot. It will be noticed that when the acute-angled arm f is in the position above described its 6o upper end stands forward of its own pivotal point, and the pressure that is put upon it through the stop E firmly holds the stop-lock lever f down on the pin p, and the greater the pressure on the stop E the more firmly it is locked.

G represents a rock-shaft mounted in suitable bearings, as g, securedto the under side of the floor, and III-I are arms rigidly keyed on said shaft. 7o

I I representlinks pivoted to the outer ends of the arms H H and to the lever portions f of the stop-locks F.

Shaft G is rocked to unlock the stops by means of a foot-bar J, pivoted at its lower end beneath the floor to an arm K, rigidly secured to said shaft, the upper end of the footbar extending up through the floor in a position convenient to the operator.

The operation of my apparatus is as fol- 8o lows: Suppose the parts to be in the position shown in Fig. l, and that there are several logs on the skids, the front one resting against the stops. N ow when it is desired to roll a log past the stop the operator presses on the foot-bar and rocks the shaft, which movement, through the arms H H and the links I I, raises the front ends of the stop-lock levers f, thereby throwing their arms f backward, the upper ends of said arms moving in the 9o concave portion of the ogee or wave e until they pass beyond the pivotal points of the stops E when the stops will be free to be canted by the log in its forward movement on the skids. It will be understood that in this 9 5 movement of the arms f the arms f2 will be thrown upward, so that their upper ends will be above the tops of the skids, as seen in Fig.

2. Then as the log or other moving body rolls over and past the stops E, the latter will by rco gravity assume their normal positions, owing to the fact that the heaviest portion of each stop is in rear of the pivotal point and the weight of the stop-lock levcrsfand their arms f2 will reset the lock-arms j". Should any obstruction prevent these parts from performing their functions by gravity, the moving body will come into cont-act with the arms]12 and press down on them, which will result in rocking the lever portions fon their pivots, thereby throwing the acute-angled arms f forward until their upper ends again rest under the convex portion ot' the ogee or wave e in the stops and rocking the rock-arm and connected parts back into their normal positions, this forward movement of the armsf of the stop-locks serving to reset and lock the stops against the next log or other body, as will be apparent from' the drawings. The arms f are formed at an acute angle to the stop-lock levers f, in order that when the formerare in position to lock the stop the levers will be elevated, so that the tree working ot the apparatus may not be obstructed in an obvious manner by chips, sawdust, dsc., the lever portionsj" being` limited as to their downward movement by pins p lixed in the metal plate U.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a stopping apparatus, a skid provided with a pivoted stop, a lever pivoted beneath the pivot of said stop and provided with an arm bearing normally against the stop to lock it, and mechanism to rock the lever and unlock the stop, combined substantially as described.

2. In a stopping apparatus, a skid provided with a pivoted stop, a lever pivoted beneath the stop and provided at its t'ront end with a resetting-arm and at its rear end with a locking-arm bearing normally against the stop,

and mechanism to rock the lever and unlock the stop, combined substantially as described.

3. In a stopping apparatus, a skid provided with a pivoted stop having an ogee or wave in its under side beneath its pivotal point, a

lever pivoted below the stop and provided with an arm bearing normally against the convex portion ot' the ogee or wave to lock the stop, and mechanism to rock the lever and throw said arm backward to unlock the stop, combined substantially as described.

et. In a stopping apparatus, a skid provided with a pivoted stop having an ogee or wave in its under side beneath its pivotal point, the stop being heavier in rear of said point than in front ot it, a lever pivoted below the stop and provided with an arm bearing normally against the convex portion of said ogee or wave to lock the stop, and mechanism to rock the lever upward to throw said arm backward to unlock the stop, all combined substantially as described.

5. In a stopping apparatus, a skid provided with a pivoted stop having an ogee or wave in its under side beneath its pivotal point, a lever pivoted below the stop and provided with an arm bearing normally against the convex portion of said ogee or wave to lock the stop, mechanism to rock the lever upward to throw said arm backward to unlock the stop, and a resetting-arm secured to the lever and operated by the log or rolling body to depress the lever and thus throw the lockingarm forward again to lock the stop, all combined substantially as described.

(5. A stopping apparatus comprising two skids, a stop and a lever pivoted to the inner side of each of said skids, the lever being provided with a locking-arm and a resettingarm, a rock-shaft, arms on said shaft, links pivoted to the outer ends of said arms and to the levers, a toot-bar, and an arm rigidly secured to the shaft at one end and pivoted at its other end to the foot-bar, all combined substantially as and for the purposes stated.

In testimony whereof I affix my signature in presence of two witnesses.

FLAYEL SIMONSON.

Witnesses:

ELIsHA BAXTER, SAML. IEn'rn. 

